James b



(No Model.)

' J. B. BROWN.

PLOW.

No. 342,896. Patented June 1, 1886.

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NITED STATES JAMES B. BROWN, on NEW YORK, N. Y.

PLOW.

SPECIFICATION forming part of Letters Patent No. 342,896, dated June 1,1886.

Application filed August 27, 1885. Serial No. 175,416. (No model.)

T 0 (ZZZ whom it may concern:

Be it known that I, JAMES B. BRO N, a citizen of the United States,residing in the'city of New York, in the county of New York and State ofNew York, have invented certain new and useful Improvements in Plows, ofwhich the following is a specification.

My invention relates to that class of plows in which the beam isvertically adjustable; and the invention consists in an improved adjusting plate and standard-head, as hereinafter described.

Hitherto adjusting-plates have been made with ratchet or saw-shapedteeth which extend across the plate. The sharp angles of the base ofthese teeth are objectionable, as it is well known that iron castingsare defective and apt to break at all sharp or V-shaped angles,whichdefect is cured by changing to a U shape. Again, said teeth project fromand extend all the way across the plate. This gives to the plate aseries of alternate thickness and thinnessin the metal, with the resultof unequal contraction in cooling and hardness of the plate where it isthe thinnest. Thus such plates, on account of the unequal contraction,will be warped, and when forced against the standard-head take an unevenbearing and break at the base-angle of the teeth.

The object of my invention is an adjustingplate and standard-head whichwill be free from these defects, and durable. I attain this object byconstructing the adj Listing-plate and plow-standard head as shown inthe accompanying drawings, in which I have also shown it as applied tothe improved plow for which Letters Patent were granted to me on the24th day of March, 1885, No. 314,425. v

Figure l is a perspective view of a plow in which my invention isembodied. Fig. 2 is a sectional detail of the plow-beam, adjustingplate,and standard-head, taken on line a m of Fig. 1. Fig. 3 is a front viewof the adj nstingplate. Fig. 4 is a back view of standard-head, showingslot through which the connectingbolt passes, and a series ofcorrugations located on one side of the slot, corresponding to the onesin Fig. 3. Both Figs. 3 and 4 are correspondingly enlarged from Fig. 2.Fig. 5 is a sectional detail of the plow-beam,taken on line y y of Fig.1.

Similar letters refer to similar parts in the views.

A- is the plow-beam.

A is the plow-head.

A is the rear end of the plow-beam, pivoted to the handle 0.

B is the standard, which terminates in an enlarged head or plate, B.This head has a wide vertical slot, a, at its center, andv on its backface a series of horizontal corrugations, (1 on one side of the slotsaythat toward the plow-head. The ridges of these corrugations projectabove the other side of .the plate a, which is a flat surface and givesa bearing to a similar surface on the adjusting-plate, as hereinafterset forth, all of which is shown in Figs. 2, 3, and 4.

B is a plate, which fits on the front side of that portion of theplow-beam opposite the standard-head. It has top and bottom flangesprojecting from its rear face, so as to fit 011 or clasp the beam Abetween them. In its center it is pierced by a bolt-hole, I), which is alittle lessin diameter than the width of the slot in the standard-headB. One side of the front face of this platesay that toward theplowheadhas a series of corrugations which correspond to those on therear face of thestandard-head B, so that the ridges of the one willenter the hollows of the other. These corrugations are formed in theplate-that is, the tops of their ridges are even or a little below thatportion of the plate on the opposite side, If, which is aflat surfaceand corresponds to the surface before mentioned on standard-head B. Itwill be seen that by this'construction the plate is much stronger thanif the corrugations were carried all the way across the plate andstandard-head, as the plate would be deficient in strength at the bottomof its hollows and be apt to break, as is proved by adjusting-plateswhich are cut across by a series of ratchet or saw teeth. When the plateB is brought into connection with the head B, the

two surfaces at and b bear the one on the other, and thus prevent anyirregular bearing of the corrugations and consequent breakage of theplate when the parts are forced together by the bolt and nut, ashereinafter described.

D is a block interposed between the handle 0 and the beam end A D is abolt, which connects the beam end A to the handle 0 and forms a pivotfor the beam to turn on, as is shown.

E is a bolt, which passes through the slot at in the standard-head, thebolt-hole b in the plate, and the beam A, and is provided with a nut forsecuring all of these parts together. It will be seen that the beam ispivoted to the handle 0 at A, and that its free end or plowhead A can beraised or lowered.

When it is desired to make the plow out deeper, the nut on the bolt E isloosened sufficiently to allow the corrugations on the plate 13 andthose on the standardhead B to clear, and the plow-head is raised to therequired position and secured by again tightening the nut. In makingthis adj ustment the corrugations at the bot-ton of the plate B willmesh into the corrugations at the top of the stand ard-head B. \Vhen itis required to cut a shallower furrow, the nut is loosened and the aboveoperation is reversed, when the corrugations at the top of the plate P;will mesh into the ones at the bottom of the standardhead B.

What I claim is- The combination of the standard-head havingbearing-face divided into two parts, one of which is provided with teethor corrugations and the other has a fiat surface depressed below theteeth, and the plate having its face divided into two parts, one parthaving teeth or corrugations and the other part'plain and above theteeth, the plain surface bearing on the plain surface of thestandard-head and the teeth interlocking with the teeth on the same,sub- \Vitncsses:

J. H. SIMONSON, J. W. DOUGLASS.

